20. I have been waiting for you ______ . A. since early morning B. since 9a.m C. for two hours D. All are correct 21. Almost everyone _______ for home by the time we arrived. A. leave B. left C. leaves D. had left 22. By the age of 25, he ______ two famous novels. A. wrote B. writes C. has written D. had written 23. While her husband was in the army, Mary ______ to him twice a week. A. was reading B. wrote C. was written D. had written 24. I couldn’t cut the grass because the lawn mower ______ a few days previously. A. broke down B. has been broken C. had broken down D. breaks down 24. I have never played badminton before. This is the first time I _____ to play. A. try B. tried C. have tried D. am trying 25. Since _______, I have heard nothing from him. A. he had left B. he left C. he has left D. he was left 26. After I _______ lunch, I looked for my bag. A. had B. had had C. have has D. have had 27. By the end of next year, George _______ English for two years. A. will have learned B. will learn C. has learned D. would learn 28. The man got out of the car, ________ round to the back and opened the book. A. walking B. walked C. walks D. walk 29. Henry _______ into the restaurant when the writer was having dinner. A. was going B. went C. has gone D. did go 30. He will take the dog out for a walk as soon as he ______ dinner. A. finish B. finishes C. will finish D. finishing 31. I shall be glad when he _______. A. had gone B. did go C. went D. has gone 32 Ask her to come and see me when she _______ her work. A. finish B. has finished C. finished D. finishing 33. Turn off the gas. Don’t you see the kettle ________ ? A. boil B. boils C. is boiling D. boiled 34. Tom and Mary ______ for Vietnam tomorrow. A. leave B. are leaving C. leaving D. are left 35. He always ________ for a walk in the evening. A. go B. is going C. goes D. going 36. Her brother ______ in Canada at present. A. working B. works C. is working D. work 37. I ______ to the same barber since last year. A. am going B. have been going C. go D. had gone 38. Her father ______ when she was a small girl. A. dies B. died C. has died D. had died 39. Last week, my professor promised that he ________ today. A. would come B. will come C. comes D. coming 40. Pasteur ______ in the 19th century. A. was living B. lived C. had lived D. has lived